Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The onset of September brings an average high-temperature of a still moderately hot 79.7°F (26.5°C), nearly matching the August temperature. During September, Harkers Island perceives a slight decrease in temperature from daytime highs, settling at an average low of 74.3°F (23.5°C).Humidity
In Harkers Island, the average relative humidity in September is 77%.Rainfall
In Harkers Island, North Carolina, in September, it is raining for 17.5 days, with typically 4.49" (114mm) of accumulated precipitation. Throughout the year, there are 181.4 rainfall days, and 34.76" (883mm) of precipitation is accumulated.Snowfall
In Harkers Island, snow does not fall in March through December.Ocean temperature
In Harkers Island, in September, the average water temperature is 80.8°F (27.1°C).Note: For any water activity, the surface water temperatures in the range of 77°F (25°C) to 84.2°F (29°C) are deemed excellent and incredibly pleasant for longer durations.
Daylight
The average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 6:39 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:51 pm EDT.
Sunshine
The average sunshine in September in Harkers Island is 9.6h.UV index
In Harkers Island, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 6 in September leads to these guidelines:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Frequently asked questions
What is the average September temperature in Harkers Island?
What is the average humidity in September in Harkers Island?
How many days does it rain in September in Harkers Island?
When it does not snow in Harkers Island?
What is the ocean temperature in September in Harkers Island?
How many hours of daylight does Harkers Island have in September?
What time are sunrise and sunset in September in Harkers Island?
How long on average sun shines in September in Harkers Island?
How high is the UV index in September in Harkers Island?
Average temperature in September
Harkers Island, NC
- Average high temperature in September: 79.7°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (54.1°F).
- Average low temperature in September: 74.3°F
The month with the highest average low temperature is July (78.3°F).
The coldest month (with the lowest average low temperature) is January (44.6°F).
Average pressure in September
Harkers Island, NC
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is December (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Harkers Island, NC
- Average wind speed in September: 11.6mph
The windiest months (with the highest average wind speed) are February and March (14mph).
The calmest month (with the lowest average wind speed) is August (10.4mph).
Average humidity in September
Harkers Island, NC
- Average humidity in September: 77%
The months with the highest relative humidity are May, June, July and August (78%).
The months with the lowest relative humidity are February, March and October (74%).
Average rainfall in September
Harkers Island, NC
- Average rainfall in September: 4.49"
The wettest month (with the highest rainfall) is August (4.84").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in September
Harkers Island, NC
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (22.3 days).
The months with the least rainy days are February and November (11.1 days).
Average snowfall in September
Harkers Island, NC
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Harkers Island, NC
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Harkers Island, NC
- Average sea temperature in September: 80.9°F
The best month for swimming (with the highest average sea temperature) is August (83.2°F).
The coldest month (with the lowest average sea temperature) is February (61.3°F).
Average daylight in September /
Average sunshine in September
Harkers Island, NC
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Harkers Island, NC
- Average sunshine days in September: 9.7 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is August (5.9 days).
Average UV index in September
Harkers Island, NC
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in September
Harkers Island, NC
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in September
Harkers Island, NC
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Harkers Island, North Carolina, USA
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